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Finding the Fourth Proportional to 561,514.48, 774,888.72 and 319,797.04

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Solution

The fourth proportional to 561,514.48, 774,888.72 and 319,797.04 is: 441,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,514.48 : 774,888.72 = 319,797.04 : x
  2. Step 2: Convert to fraction form
    561,514.48/774,888.72 = 319,797.04/x
  3. Step 3: Cross multiply
    561,514.48x = 774,888.72 × 319,797.04
  4. Step 4: Simplify right side
    561,514.48x = 247,807,118,985.39
  5. Step 5: Solve for x
    x = 247,807,118,985.39/561,514.48
  6. Step 6: Final answer
    x = 441,319.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.